surface

As a verb surface

is .

As an adjective undercover is

performed or happening in secret.

As a noun undercover is

a person who works.

As nouns the difference between surface and underneath

is that surface is the overside or up-side of a flat object such as a table, or of a liquid while underneath is the part under or lower.

As a verb surface

is to provide something with a surface.

As an adverb underneath is

below; in a place beneath.

As a preposition underneath is

under, below, beneath.

As an adjective underneath is

under, lower.

As verbs the difference between surface and sub

is that surface is while sub is (us|informal) to substitute for or sub can be to coat with a layer of adhering material; to planarize by means of such a coating.

As a noun sub is

a submarine.

As a preposition sub is

under.

As nouns the difference between surface and surfaces

is that surface is the overside or up-side of a flat object such as a table, or of a liquid while surfaces is plural of surface.

As verbs the difference between surface and surfaces

is that surface is to provide something with a surface while surfaces is third-person singular of surface.

As verbs the difference between risen and surface

is that risen is while surface is .

As a noun lift

is lift; elevator (mechanical device for vertically transporting goods or people).

As a verb surface is

.

As nouns the difference between aspect and surface

is that aspect is the way something appears when viewed from a certain direction or perspective while surface is the overside or up-side of a flat object such as a table, or of a liquid.

As a verb surface is

to provide something with a surface.

As verbs the difference between slope and surface

is that slope is (label) to tend steadily upward or downward while surface is .

As a noun slope

is an area of ground that tends evenly upward or downward.

As an adjective slope

is (obsolete) sloping.

As an adverb slope

is (obsolete) slopingly.

In transitive terms the difference between manifold and surface

is that manifold is to make manifold; multiply while surface is to apply a surface to something.

As an adjective manifold

is various in kind or quality, diverse.

As an adverb manifold

is many times; repeatedly.

As nouns the difference between surface and sailboat

is that surface is the overside or up-side of a flat object such as a table, or of a liquid while sailboat is a boat propelled by sails.

As a verb surface

is to provide something with a surface.